JPH0467082B2 - - Google Patents
Info
- Publication number
- JPH0467082B2 JPH0467082B2 JP58104979A JP10497983A JPH0467082B2 JP H0467082 B2 JPH0467082 B2 JP H0467082B2 JP 58104979 A JP58104979 A JP 58104979A JP 10497983 A JP10497983 A JP 10497983A JP H0467082 B2 JPH0467082 B2 JP H0467082B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- exchanger tube
- support member
- tube support
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002826 coolant Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 16
- 238000011084 recovery Methods 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 5
- 230000035882 stress Effects 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Description
【発明の詳細な説明】
この発明は伝熱管の支持装置に係り、特にガス
タービン排ガスの熱を回収する廃熱回収ボイラの
伝熱管を効果的に支持し得る装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support device for heat transfer tubes, and more particularly to a device that can effectively support heat transfer tubes of a waste heat recovery boiler that recovers heat from gas turbine exhaust gas.
最近の燃料事情の変化に伴い、火力発電所にお
いてもより高い発電効率が要求されており、これ
を実現する手段の一つとしてガスタービンと蒸気
タービンとを組み合せた複合発電プラントの建設
が行なわれている。複合発電プラントは先ずガス
タービンにより発電を行なうと共にガスタービン
から排出された排ガス中の熱を廃熱回収ボイラに
おいて回収し、同ボイラにおいて発生した蒸気に
より蒸気タービンを駆動して発電を行なうもので
ある。 With recent changes in the fuel situation, even higher power generation efficiency is required in thermal power plants, and one way to achieve this is the construction of combined cycle power plants that combine gas turbines and steam turbines. ing. A combined power generation plant first generates electricity using a gas turbine, then recovers the heat in the exhaust gas discharged from the gas turbine in a waste heat recovery boiler, and uses the steam generated in the boiler to drive a steam turbine to generate electricity. .
第１図はこの廃熱回収ボイラの一例を示す。排
ガスＧを通過させるダクト３０内には排ガス流れ
上流側から順に、過熱器３１、高圧蒸発器３３、
低圧蒸発器３４、高圧節炭器３７，低圧節炭器３
８等の伝熱管群が配置してある。なお、図中符号
３２は脱硝装置である。第２図はこの伝熱管群の
従来型支持構造を示す。 FIG. 1 shows an example of this waste heat recovery boiler. Inside the duct 30 through which the exhaust gas G passes, there are, in order from the upstream side of the exhaust gas flow, a superheater 31, a high-pressure evaporator 33,
Low pressure evaporator 34, high pressure economizer 37, low pressure economizer 3
A group of heat exchanger tubes such as No. 8 are arranged. Note that the reference numeral 32 in the figure is a denitrification device. FIG. 2 shows a conventional support structure for this heat exchanger tube group.
５は排ガスダクト全体を支持するための支持
梁、３は排ガスダクトを構成するケーシングであ
り、このケーシング３を介して支持梁５の上に伝
熱管支持部材６が配置してある。一方伝熱管１を
有するヘツダ１１に対しては受け部材１２が取り
付けてある。７はこの受け部材１２の底板部を挾
持する爪（ストツパ）であり、この底板部との間
に一定の隙間を形成しておくことにより伝熱管
１、ヘツダ１１の熱による伸縮を吸収するように
している。この様に構成することにより伝熱管
１、ヘツダ１１の荷重は受け部材１２、支持部材
６、ケーシング３を介して支持梁５によつて支持
されるようになつている。この装置は伝熱管群の
支持を強固に行えるという利点を有する反面、次
の如き問題が指摘されており、その解決が望まれ
ている。 5 is a support beam for supporting the entire exhaust gas duct, 3 is a casing that constitutes the exhaust gas duct, and a heat exchanger tube support member 6 is placed on the support beam 5 via this casing 3. On the other hand, a receiving member 12 is attached to the header 11 having the heat exchanger tube 1. Reference numeral 7 denotes a pawl (stopper) that clamps the bottom plate portion of the receiving member 12, and by forming a certain gap with this bottom plate portion, expansion and contraction due to heat of the heat exchanger tube 1 and the header 11 is absorbed. I have to. With this configuration, the load of the heat exchanger tube 1 and the header 11 is supported by the support beam 5 via the receiving member 12, the support member 6, and the casing 3. Although this device has the advantage of firmly supporting the heat exchanger tube group, the following problems have been pointed out, and solutions to these problems are desired.
(1) 支持部材６がケーシング３に対して密着配置
してあるため、この支持部材を介してケーシン
グ３側に排ガスの熱が伝達され、ケーシング３
は極部的に過熱状態となつて応力が発生し、ケ
ーシングの歪み等が生じる。(1) Since the support member 6 is arranged in close contact with the casing 3, the heat of the exhaust gas is transferred to the casing 3 side via this support member, and the heat of the exhaust gas is transferred to the casing 3
When the casing becomes overheated, stress is generated and the casing becomes distorted.
(2) ケーシング３と支持部材６とは溶接によつて
強固に接続してあるため、応力の吸収が不可能
となり、歪みの発生を助長すると共に亀裂を生
じる虞れもある。(2) Since the casing 3 and the support member 6 are firmly connected by welding, it is impossible to absorb stress, which promotes distortion and may cause cracks.
(3) ケーシング３から外部に熱が放散し、ケーシ
ングの塗装を焼損させたり、ボイラの熱回収効
率を低下させることになる。(3) Heat is dissipated from the casing 3 to the outside, which may burn out the coating on the casing or reduce the heat recovery efficiency of the boiler.
この発明の目的は上述した問題点を除去し、伝
熱管の支持を強固に行え、かつ熱応力の発生を最
小限に止めると共に、発生した応力を吸収し得る
よう構成した装置を提供することにある。 The purpose of the present invention is to eliminate the above-mentioned problems and provide a device that can firmly support heat exchanger tubes, minimize the generation of thermal stress, and absorb the generated stress. be.
要するにこの発明は、ケーシング外に位置する
支持梁でケーシング、伝熱管支持部材をを介し伝
熱管過重を支持する伝熱管支持装置において、該
伝熱管支持部材の底面とケーシング間に、剛性が
高くかつ熱伝導性の低い板体を位置させ、該伝熱
管支持部材の上端面に伝熱管ヘツダの支持脚を変
移可能に接触させ、ケーシング内面と該伝熱管支
持部材を囲み断熱材を設けたことを特徴とする伝
熱管支持装置である。 In short, the present invention provides a heat exchanger tube support device that supports the excess weight of heat exchanger tubes via a casing and a heat exchanger tube support member with a support beam located outside the casing, which has high rigidity and A plate with low thermal conductivity is positioned, the support leg of the heat exchanger tube header is brought into movable contact with the upper end surface of the heat exchanger tube support member, and a heat insulating material is provided surrounding the inner surface of the casing and the heat exchanger tube support member. This is a characteristic heat exchanger tube support device.
以下この発明の実施例を説明する。 Examples of the present invention will be described below.
第３図は第１の実施例を示す。ケーシング３の
うち、支持梁５と接触する面と反対の面に対して
は爪（ストツパ）９が取り付けてある。支持部材
１４の底板部１４ａはこの爪９に挾持される。底
板部１４ａとケーシング３との間にはステンレス
材、要すればマイカ（雲母板）等の如く剛性が高
くかつ比較的熱伝導性の低い材料８を介在配置さ
せる。また場合によつては爪９を略「コ」の字形
に形成する。なお、各爪９と底板部１４ａの側縁
部との間には一定の隙間を形成しておき底板部１
４ａが水平方向に移動し得るようにして若干の熱
変位に対応しかつ地震時の水平力に対応できるよ
うにしておく。一方ヘツダ１１の下部には円筒形
の脚部材１３を取り付け、この脚部材１３を支持
部材１４の上板部１４ｂ上に載置する。この上板
部１４ｂに対しては脚部材１３を取り囲むように
ストツパ１０が取り付けてある。この場合ストツ
パ１０を脚部材１３と密着配置せず一定の空間を
形成しておくことにより脚部材１３が上板部１４
ａ上で水平方向に変位し得るよう構成しておく。
次に支持部材１４の周囲には断熱材２及び２ａを
配置し断熱する。以上の構成とすることにより支
持部材１４は過熱器部では約800℃、節炭器部で
は300〜400℃の排ガスＧの熱から断熱されるた
め、ケーシング３に対して伝達される熱量は僅か
となり、熱損失、熱応力の発生は大幅に減少しケ
ーシング温度も低下させることができる。また熱
応力が発生しても介在部材１３と上板部１４ｂ、
底板部１４ａとケーシング１３の相対的な変位に
よつて吸収することができるのでケーシングの歪
み、各接続部を中心とする割れ等が発生すること
はない。この第３図は節炭器等比較的排ガス温度
の低い処への適用が望ましい。 FIG. 3 shows a first embodiment. A claw (stopper) 9 is attached to the surface of the casing 3 opposite to the surface that contacts the support beam 5. The bottom plate portion 14a of the support member 14 is held between the claws 9. A material 8 having high rigidity and relatively low thermal conductivity, such as stainless steel or, if necessary, mica (mica plate), is interposed between the bottom plate portion 14a and the casing 3. In some cases, the claws 9 are formed into a substantially U-shape. Note that a certain gap is formed between each claw 9 and the side edge of the bottom plate part 14a.
4a can be moved in the horizontal direction to cope with slight thermal displacement and to cope with horizontal force during an earthquake. On the other hand, a cylindrical leg member 13 is attached to the lower part of the header 11, and this leg member 13 is placed on the upper plate portion 14b of the support member 14. A stopper 10 is attached to the upper plate portion 14b so as to surround the leg member 13. In this case, by not arranging the stopper 10 in close contact with the leg member 13 and forming a certain space, the leg member 13 can be attached to the upper plate part 14.
It is configured so that it can be displaced horizontally on a.
Next, heat insulating materials 2 and 2a are arranged around the support member 14 to provide heat insulation. With the above configuration, the support member 14 is insulated from the heat of the exhaust gas G, which is about 800°C in the superheater part and 300 to 400°C in the economizer part, so the amount of heat transferred to the casing 3 is small. As a result, heat loss and thermal stress are significantly reduced, and the casing temperature can also be lowered. Furthermore, even if thermal stress occurs, the intervening member 13 and the upper plate portion 14b,
Since this can be absorbed by the relative displacement between the bottom plate portion 14a and the casing 13, distortion of the casing, cracking around each connection portion, etc. do not occur. It is desirable to apply this figure 3 to a place where the exhaust gas temperature is relatively low, such as a fuel economizer.
第４図は第２の実施例を示す。この実施例の場
合には過熱器等の排ガス温度の高い処に実施する
もので、支持部材を２つに分割し、かつ両支持部
材５，１６の間に空間を形成することにより伝熱
量をさらに低下させるよう構成したものである。
１５は上部支持部材、１６は底部支持部材であ
る。第５図を用いて両支持部材の接続状態につい
て説明すると、上部支持部材１５の底板部１５ａ
と、底部支持部材１６の上板部１６ｂとの間には
円筒形等のスペーサ１７が介在配置してあり空間
部１８が形成されると共に、スペーサ１７を挿通
したボルト１９により両支持部材は接続される。
なお、上部支持部材１５の上板部１５ｂに対して
は脚部材１３で支持されるヘツダ１１が配置され
る。またこの脚部材１３を囲みストツパ１０が支
持部材１５の上面に設けられる。一方底板支持部
材１６の底板部１６ａは爪（ストツパ）９によつ
て挾持されるが、これら配置状態、挾持状態は第
１の実施例の場合と同様地震時の水平力に対応し
て設けられるものである。 FIG. 4 shows a second embodiment. In the case of this embodiment, it is implemented in a place where the exhaust gas temperature is high such as a superheater, and the amount of heat transfer is reduced by dividing the support member into two and forming a space between both support members 5 and 16. This structure is designed to further reduce the amount of water.
15 is an upper support member, and 16 is a bottom support member. To explain the connection state of both support members using FIG. 5, the bottom plate portion 15a of the upper support member 15
A cylindrical spacer 17 is interposed between the upper plate portion 16b of the bottom support member 16 to form a space 18, and both support members are connected by a bolt 19 inserted through the spacer 17. be done.
Note that the header 11 supported by the leg members 13 is disposed on the upper plate portion 15b of the upper support member 15. Further, a stopper 10 is provided on the upper surface of the support member 15 surrounding the leg member 13. On the other hand, the bottom plate part 16a of the bottom plate support member 16 is clamped by claws (stoppers) 9, and the arrangement and clamping state of these are set in response to the horizontal force during an earthquake, as in the first embodiment. It is something.
第６図ないし第８図は第３の実施例を示す。 6 to 8 show a third embodiment.
この実施例は前述の第２の実施例にさらに改良
を加えたものである。上部支持部材１５と下部支
持部材１６の各々の周囲は仕切壁で取り囲み、各
支持部材はこの仕切壁により形成した箱体２０お
よび２１によつて密閉される。２２及び２３は各
支持部材の壁面部に形成した連通孔であり、冷空
気等の冷却媒体を通過させるものである。第８図
はこの支持部材の配置状態を示し、箱体２０およ
び２１により密閉された支持部材がヘツダ１１の
長手方向に対して複数基設置してある。なお、符
号２４は各箱体を連通させる連通管であり、冷空
気等の冷却媒体２５を供給する。この連通管は要
すればＵ字型に形成しヘツダの長手方向について
の箱体側面を接続するものとし熱膨張変形に対応
させてもよい。この実施例の場合には支持部材設
置部のケーシングへの伝熱量を低下させる上で効
果がある。 This embodiment is a further improvement of the second embodiment described above. Each of the upper support member 15 and the lower support member 16 is surrounded by a partition wall, and each support member is hermetically sealed by boxes 20 and 21 formed by the partition wall. Reference numerals 22 and 23 are communicating holes formed in the wall surface of each support member, through which a cooling medium such as cold air passes. FIG. 8 shows the arrangement of the support members, in which a plurality of support members sealed by boxes 20 and 21 are installed in the longitudinal direction of the header 11. In addition, the code|symbol 24 is a communication pipe which connects each box body, and supplies the cooling medium 25, such as cold air. If necessary, this communication pipe may be formed into a U-shape to connect the side surfaces of the box body in the longitudinal direction of the header to accommodate thermal expansion and deformation. This embodiment is effective in reducing the amount of heat transferred from the support member installation portion to the casing.
この発明を実施することにより次の効果を発揮
することができる。 By implementing this invention, the following effects can be achieved.
(1) 支持部材を介して排ガスの熱を外部に伝達す
る量を大幅に低減できるのでケーシング等の歪
みの発生を防止することができる。(1) Since the amount of exhaust gas heat transferred to the outside via the support member can be significantly reduced, distortion of the casing, etc. can be prevented.
(2) 各々相対的に変位し得るよう各部材を取り付
けたので応力が発生してもその応力を吸収する
ことができる。(2) Since each member is attached so that it can be displaced relative to each other, even if stress occurs, it can be absorbed.
(3) 外部に放散する熱量を減少させることができ
るので熱回収効率を高めることができる。(3) Since the amount of heat dissipated to the outside can be reduced, heat recovery efficiency can be increased.
第１図は廃熱回収ボイラの断面図、第２図ない
し第４図は伝熱管支持部の断面図であつて、第２
図は従来の構造を、第３図は第１の実施例を、第
４図は第２の実施例を示し、第５図は第４図のイ
部詳細図、第６図は第３の実施例を示す伝熱管支
持部の断面図、第７図は第６図のＡ−Ａ線による
断面図、第８図は伝熱管支持部の斜視図である。
１……伝熱管、２，２ａ……断熱材、３……ケ
ーシング、５……支持梁、１４……支持部材、１
５……上部支持部材、１６……下部支持部材、１
８……空間部、２０，２１……箱体、２５……冷
却媒体。
FIG. 1 is a sectional view of the waste heat recovery boiler, and FIGS. 2 to 4 are sectional views of the heat exchanger tube support part.
The figures show the conventional structure, Fig. 3 shows the first embodiment, Fig. 4 shows the second embodiment, Fig. 5 is a detailed view of the part A in Fig. 4, and Fig. 6 shows the third embodiment. FIG. 7 is a sectional view taken along the line A-A in FIG. 6, and FIG. 8 is a perspective view of the heat exchanger tube support section showing an embodiment. DESCRIPTION OF SYMBOLS 1... Heat exchanger tube, 2, 2a... Heat insulating material, 3... Casing, 5... Support beam, 14... Support member, 1
5... Upper support member, 16... Lower support member, 1
8...Space, 20, 21...Box, 25...Cooling medium.
Claims (1)
グ、伝熱管支持部材をを介し伝熱管過重を支持す
る伝熱管支持装置において、該伝熱管支持部材の
底面とケーシング間に、剛性が高くかつ熱伝導性
の低い板体を位置させ、該伝熱管支持部材の上端
面に伝熱管ヘツダの支持脚を変移可能に接触さ
せ、ケーシング内面と該伝熱管支持部材を囲み断
熱材を設けたことを特徴とする伝熱管支持装置。 ２ 前記伝熱管支持部材と前記支持脚との間に更
に別の伝熱管支持部材をスペーサを介して接続し
２段型の伝熱管支持装置に形成したことを特徴と
する特許請求の範囲第１項記載の伝熱管支持装
置。 ３ 前記伝熱管支持部材を箱体に形成し、冷却媒
体を供給する管路を接続したことを特徴とする特
許請求の範囲第１及び第２項項記載の伝熱管支持
装置。[Scope of Claims] 1. In a heat exchanger tube support device in which a support beam located outside the casing supports the excess weight of the heat exchanger tubes via the casing and the heat exchanger tube support member, there is a rigidity between the bottom surface of the heat exchanger tube support member and the casing. A plate body with high heat exchanger tube support member and low thermal conductivity is positioned, the support legs of the heat exchanger tube header are brought into movable contact with the upper end surface of the heat exchanger tube support member, and a heat insulating material is provided surrounding the inner surface of the casing and the heat exchanger tube support member. A heat exchanger tube support device characterized by: 2. Claim 1, further characterized in that another heat exchanger tube support member is connected between the heat exchanger tube support member and the support leg via a spacer to form a two-stage heat exchanger tube support device. Heat exchanger tube support device as described in . 3. The heat exchanger tube support device according to claims 1 and 2, wherein the heat exchanger tube support member is formed into a box shape, and a pipe line for supplying a cooling medium is connected to the heat exchanger tube support member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10497983A JPS59231301A (en) | 1983-06-14 | 1983-06-14 | Supporter for heat transfer pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10497983A JPS59231301A (en) | 1983-06-14 | 1983-06-14 | Supporter for heat transfer pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59231301A JPS59231301A (en) | 1984-12-26 |
| JPH0467082B2 true JPH0467082B2 (en) | 1992-10-27 |
Family
ID=14395207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10497983A Granted JPS59231301A (en) | 1983-06-14 | 1983-06-14 | Supporter for heat transfer pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59231301A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4570223B2 (en) * | 2000-09-27 | 2010-10-27 | 住友化学株式会社 | Multi-tube heat exchanger and repair method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51114503A (en) * | 1975-03-17 | 1976-10-08 | Babcock & Wilcox Co | Steam generator |
| JPS582A (en) * | 1981-06-23 | 1983-01-05 | 株式会社東芝 | Waste heat recovering boiler |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5823044Y2 (en) * | 1976-03-01 | 1983-05-17 | 三井造船株式会社 | Boiler support structure |
-
1983
- 1983-06-14 JP JP10497983A patent/JPS59231301A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51114503A (en) * | 1975-03-17 | 1976-10-08 | Babcock & Wilcox Co | Steam generator |
| JPS582A (en) * | 1981-06-23 | 1983-01-05 | 株式会社東芝 | Waste heat recovering boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59231301A (en) | 1984-12-26 |
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